The Rāmāyaṇa of Vālmīki 2.46.59

2.46.59

apramatto bale kośe durge janapade tathā
bhavethā guha rājyaṃ hi durārakṣatamaṃ matam

And the two royal brothers there
With coats of bark and matted hair,
Transformed in lovely likeness stood
To hermit saints who love the wood.
So Ráma, with his brother bold,
A pious anchorite enrolled,
Obeyed the vow which hermits take,
And to his friend, King Guha, spake:
'May people, treasure, army share,
And fenced forts, thy constant care:
Attend to all: supremely hard
The sovereign's task, to watch and guard.'